EP0333031A1 - Procédé et dispositif pour la fabrication de granules décoratives et utilisation de ces granules - Google Patents

Procédé et dispositif pour la fabrication de granules décoratives et utilisation de ces granules Download PDF

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Publication number
EP0333031A1
EP0333031A1 EP89104184A EP89104184A EP0333031A1 EP 0333031 A1 EP0333031 A1 EP 0333031A1 EP 89104184 A EP89104184 A EP 89104184A EP 89104184 A EP89104184 A EP 89104184A EP 0333031 A1 EP0333031 A1 EP 0333031A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
mass
belt
carrier
granules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89104184A
Other languages
German (de)
English (en)
Other versions
EP0333031B1 (fr
Inventor
Dimitrios Petridis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marburger Tapetenfabrik Jb Schaefer & Co KG GmbH
Original Assignee
Marburger Tapetenfabrik Jb Schaefer & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marburger Tapetenfabrik Jb Schaefer & Co KG GmbH filed Critical Marburger Tapetenfabrik Jb Schaefer & Co KG GmbH
Publication of EP0333031A1 publication Critical patent/EP0333031A1/fr
Application granted granted Critical
Publication of EP0333031B1 publication Critical patent/EP0333031B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/26—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/08—Screen moulding, e.g. forcing the moulding material through a perforated screen on to a moulding surface

Definitions

  • the invention relates to a method and a plant for the production of decorative granules, in which a pasty mass is divided into small portions and these are thermally solidified.
  • decorative granules are used as required, which, depending on the material properties, are bonded to the surface uniformly or in varying amounts using a binder or, for example, by thermoplastic, in order to give it a certain structure or a certain appearance .
  • the granules can be produced, for example, by extruding a plastic into sufficiently thin strands, cooling it and cutting it into granules. Plastic parts can also be chopped, ground and then fractionated.
  • the invention has for its object to provide a process for the economical production of decorative granules, with which it is possible to produce granules of very narrow size or granules of a desired size distribution, and with which it is in particular also possible to produce granules of a very specific circumferential shape , which preferably have a flat character.
  • granules and granules are not limited to particles which either have an irregular spatial extension or have a similarly large expansion in all three spatial directions, as is the case with granular materials of the This is the case, but the terms are intended to include particles of any shape, for which flat, platelet-shaped particles in particular are to be expected, which can have dimensions in the area of up to the order of magnitude of 1 cm and also above.
  • the stated object is achieved by a method which, in its basic concept, consists in that a pasty mass is applied by means of a printing stencil or printing form in self-contained, separate, discrete surface areas to a carrier surface, on which it is then at least partially solidified by the action of heat , so that the resulting surface particles can subsequently be stripped or scraped off the carrier surface.
  • the screen printing method is used, namely as a continuous application method, in which the mass to be applied is transferred from the inside of a rotating screen form cylinder to the carrier surface moved along it.
  • This carrier surface can be a rotating cylinder or else a continuous belt, which is supported at the application point for the mass if necessary by a counter-pressure roller.
  • a pasty mass should include Liquids, dispersions and suspensions are understood, with which it is possible according to the selected printing process to transfer amounts onto the support surface which lead to granules of sufficient thickness or mass. In any case, the pasty mass should not be so thin that it runs on the carrier surface and eliminates the boundaries between the discrete application areas.
  • plastisols come here, i.e. PVC pastes with different plasticizer content in question.
  • water-dilutable plastic dispersion pastes can also be used, which are given the required viscosity by a high proportion of filler.
  • Pastes based on silicate or silicate dispersion can also be suitable.
  • the use of sodium silicate (water glass) should be mentioned.
  • water-thinnable dispersion foam pastes for example acrylate foam pastes, can be suitable.
  • the rotary screen printing stencils in the preferred screen printing method can be designed in a known manner as lacquer stencils, galvano stencils or plastic rotary stencils.
  • the thickness of the stencil material can influence the application thickness of the pasty mass.
  • the printing stencil is produced by known methods, specifically with openings or openings which are matched to the shape and size of the granulate particles to be produced.
  • the printing template can have square openings with an edge length of 2 mm, which are separated from one another by impervious webs of 1 mm. How easy it is to see can be found at corre According to the trained template, produce granules of various sizes and shapes, such as circular areas, stars, chopsticks and the like.
  • the pasty mass After application to the carrier surface, the pasty mass is at least partially solidified by the action of heat. This solidification can consist of chemical curing, gelling or simply drying. If necessary, the hardened particles on the carrier surface are cooled before they are stripped from the carrier surface.
  • the granulate particles are provided with a surface pressure while they are still on the carrier surface.
  • the print job expediently takes place in gravure printing, flexographic printing or screen printing. Depending on what the order consists of, it may be expedient to only pre-dry or pre-gel the granulate particles before printing.
  • the surface design of the particles can be varied within a wide range by printing. For example, it is possible to provide the particles with a flat color print, to coat them with metallic paints or to coat them again with an application that foams up when exposed to further heat or the like.
  • blowing agents can already be added to the pasty mass, which cause the mass to foam at certain temperatures.
  • the plastisols are particularly suitable for this.
  • the mass can already be foamed on the support surface.
  • the foaming can optionally take place before printing or after printing, as a result of which different surface effects can be achieved. While the use of compact masses gives granules of a relatively precisely defined shape, the foaming leads to the particles losing their precisely defined two-dimensional shape and having a more irregular appearance.
  • the heating devices of the plant used for the production of the granules can be regulated in a wide temperature range, preferably in a range between approximately 50 and 250 ° C. In the case of cylinders, it can be useful to be able to heat or cool them alternatively.
  • the basic element is a rotary printing unit, preferably a rotary screen printing cylinder, which rolls on a moving support surface.
  • This support surface can be the surface of a rotating cylinder which also serves as a counter-pressure roller for the printing unit, but it can also be the surface of a continuous belt which runs along the screen printing cylinder and which is generally supported in the area of the printing cylinder by a mostly elastic counter-pressure roller is.
  • the pasty mass is passed into the interior of the screen printing cylinder, in which a wiper is arranged "which presses the mass onto the carrier surface through the circumferential openings when the printing cylinder rotates.
  • the carrier surface is the surface of a cylinder
  • the cylinder should be selected so large that all subsequent process measures can be carried out in the region of the cylinder circumference until the granules are stripped from the cylinder surface.
  • the inside of the cylinder can be provided with a heating and cooling device, so that its temperature can be set or controlled between 0 ° and 250 ° C.
  • a heating hood is arranged on the circumference of the cylinder, which can be designed, for example, as a hot air convection hood or as a heat radiator device.
  • a cooling hood is expediently provided on the opposite side of the cylinder, just before the stripping device for the granules.
  • the carrier surface namely the surface of the cylinder, must be such that the pasty mass adheres well to the carrier surface after printing, but can also be easily removed from the carrier surface after the particles have solidified.
  • the surface of the cylinder should therefore be polished in any case, but better still be chrome or nickel plated. It can also be provided with a polytetrafluoroethylene coating.
  • the arrangement can otherwise be similar to that for above the pure cylinder design is described.
  • the screen printing roller work against the tape lying directly against the cylinder
  • the tape will generally be guided away from the cylinder in the printing area and, as already mentioned above, supported by a special counter-pressure roller.
  • the variant with tape offers the advantage that not all procedural measures have to be listed on the cylinder circumference. After a certain wrap around the cylinder, the belt can, for example, additionally be guided around one or more cooling rollers, the latter of which the granulate is then scraped off.
  • the tapes are expediently provided with a silicone surface or a surface made of polytetrafluoroethylene.
  • silicone paper can be used when working with non-endless tape.
  • the system can have, for example, a heating duct behind the printing unit, through which the strip provided with the mass is guided in a straight line.
  • a cooling hood can be arranged behind the heating duct.
  • the system has a printing unit behind the first heating and possibly cooling device, which is followed by a post-heating device and possibly a post-cooling device.
  • a printing unit behind the first heating and possibly cooling device, which is followed by a post-heating device and possibly a post-cooling device.
  • the belt for the first heating and cooling can be passed around a cylinder, then through a separate printing unit and then the post-heating duct before it is passed around a cooling roller on which the granulate is scraped off by means of a doctor blade.
  • system elements described can also be appropriately combined with one another in another way.
  • the decorative granulate produced according to the described method which can be produced in a wide variety of variants and with a wide variety of external appearances, can preferably be used in the production of wall coverings with a structured surface, in particular structural wallpapers.
  • the use of the granules should not be restricted to this use. Rather, other applications for the granulate are conceivable.
  • granules can be produced that are compact or foamed, transparent or opaque, colorless, white or colored, as well as metallic or glitter-containing.
  • the particles can be made softer or harder.
  • the plant for producing decorative granules shown schematically in FIG. 1 has a rotary screen printing cylinder 2 which is in rolling contact with a larger steel cylinder 4. Both cylinders are rotatably mounted in a machine frame (not shown), and it is expedient for the steel cylinder to be provided with a rotary drive.
  • a screen printing squeegee 6 Arranged within the screen printing stencil 2 is a screen printing squeegee 6, which transfers the pasty application composition 8 on the inner circumference of the screen printing stencil and, upon rotation of this stencil, into the squeegee gap in accordance with the window pattern provided in the screen printing stencil onto the surface 10 of the cylinder as the carrier surface.
  • the application mass 8 is fed to the screen printing cylinder 2 from a reservoir 12 via a pump 14 and a line 16.
  • the cylinder 4 expediently contains a heating and cooling device (not shown) with which it is possible to vary the cylinder temperature within limits between 0 and either 250 ° C.
  • a surface heating device 18 is arranged, covering its circumference over a certain angular range, which can be designed, for example, as a hot air hood or also as an infrared radiator group. The most appropriate design depends on the type of mass to be processed.
  • the heating device 18 can also contain heating elements of different types in combination.
  • Cooling air hood 20 is arranged, with which cooling air can be blown onto the surface of the cylinder. Viewed in the direction of rotation of the cylinder 4, just before the screen printing cylinder 2, a doctor blade 22 is finally arranged above a collecting container 24.
  • the pasty mass 8 is applied to the carrier surface 10 of the cylinder 4 in the form of discrete surface areas, that is to say self-contained portion portions 26, as shown behind the printing unit.
  • the cylinder 4 is slightly cooled from the inside, while from the outside the heating device 18 supplies the mass particles with thermal energy, as a result of which they are solidified, dried, gelled or even foamed, depending on the type of mass.
  • the mass particles 26 are now stripped off as granules 28 by means of the doctor blade 22 from the cylinder surface 10 and fall into the collecting container 24, from where they can be used for further use.
  • FIG. 2 shows a variant of a system in which parts corresponding to the embodiment according to FIG. 1 are identified by the same reference numbers.
  • the system according to FIG. 2 differs from that according to FIG. 1 essentially in that the cylinder 4 is replaced by an endless belt 30 which forms the carrier surface for the granulate to be produced. Since the cylinder 4 is omitted as a counter-pressure roller for the screen printing cylinder, a counter-pressure roller 32 is provided for the screen printing cylinder 2 in the system according to FIG. 2.
  • the endless belt 30 passes through the screen printing unit essentially vertically upwards, is then deflected in the horizontal direction by a guide roller 34 and passes through a heating duct 36.
  • An air cooling hood 38 is finally connected to the heating duct 36 and the band then wraps around a cooling roller 40 which the doctor blade 22 is arranged for scraping the finished granules 28. From the cooling roller 40, the strip 30 is returned to the screen printing cylinder 6 via various guide rollers, among which there is also a tension roller 42.
  • a system is shown schematically, which additionally has a printing unit 44 of the mass particles 26 located on the continuous belt 46.
  • the system more or less represents a combination of the systems according to FIGS. 1 and 2, the printing unit 44 being arranged in between.
  • a large steel cylinder 4 is provided behind the screen printing cylinder 2, but in this case is looped by the endless belt 46, which is why the screen printing roller 2 does not lie directly on the cylinder, but rather is arranged somewhat to the side thereof and is provided with its own counterpressure roller 32 .
  • a cooling roller 48 is provided in this embodiment, which is wrapped by the belt 46 after leaving the cylinder 4.
  • the ribbon with the mass particles 26 then passes through the printing unit 44, which can work according to the gravure printing process, flexographic printing process or screen printing process. With this printing unit, the surface of the particles 26 is additionally provided with a decorative print.
  • the belt 46 similarly to the embodiment according to FIG. 2, first passes through a heating duct 36, then an air cooling hood 38 and is finally passed around a cooling roller 40, on which the finished granulate 28 is scraped off the belt 46.
  • the embodiment according to FIG. 3 does not use an endlessly circulating belt, but a finite carrier belt 46, which consists of silicone paper.
  • the tape 46 runs from a roll hanging in a roll-off stand 50 and is rolled up again in a roll-up stand 52 after passing through the plant.
  • the tape can be reused.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
EP89104184A 1988-03-12 1989-03-09 Procédé et dispositif pour la fabrication de granules décoratives et utilisation de ces granules Expired - Lifetime EP0333031B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808295 1988-03-12
DE3808295A DE3808295A1 (de) 1988-03-12 1988-03-12 Verfahren und anlage zum herstellen von dekorgranulaten sowie verwendung dieser granulate

Publications (2)

Publication Number Publication Date
EP0333031A1 true EP0333031A1 (fr) 1989-09-20
EP0333031B1 EP0333031B1 (fr) 1992-07-08

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EP89104184A Expired - Lifetime EP0333031B1 (fr) 1988-03-12 1989-03-09 Procédé et dispositif pour la fabrication de granules décoratives et utilisation de ces granules

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EP (1) EP0333031B1 (fr)
DE (2) DE3808295A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993000215A1 (fr) * 1991-06-21 1993-01-07 The Procter & Gamble Company Procede serigraphique destine a fabriquer un systeme d'attache mecanique rattachable et systeme d'attache ainsi fabrique
DE4300484C1 (de) * 1993-01-11 1994-01-05 Silit Werke Druckbehälter
NL1019690C2 (nl) * 2002-01-03 2003-07-04 Huibert Konings Vergruizer voor harde cryogene deeltjes.
US8071864B2 (en) 2009-04-15 2011-12-06 Monsanto Technology Llc Plants and seeds of corn variety CV897903
US8362332B2 (en) 2009-04-15 2013-01-29 Monsanto Technology Llc Plants and seeds of corn variety CV165560
US9883718B2 (en) 2012-06-26 2018-02-06 3M Innovative Properties Company Method for manufacturing fasteners and precursor webs, a fastener and a precursor web
CN109094880A (zh) * 2018-09-20 2018-12-28 安徽冠华农牧有限公司 一种肥料制粒打包装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008005002U1 (de) 2008-04-11 2008-07-17 Geerkens, Sebastian System aus Substrat, Haftvermittler und Granulat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298090A (fr) * 1961-08-11 1962-07-06 Buckau Wolf Maschf R Procédé et dispositif pour la fabrication de blocs agglomérés à partir de masses plastiques ou constituées par des boues
FR2084749A5 (en) * 1970-03-18 1971-12-17 Iampella Ab Oy Porous granule production and equipment
US4537647A (en) * 1982-10-06 1985-08-27 The Boeing Company Method for applying turbulators to wind tunnel models

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298090A (fr) * 1961-08-11 1962-07-06 Buckau Wolf Maschf R Procédé et dispositif pour la fabrication de blocs agglomérés à partir de masses plastiques ou constituées par des boues
FR2084749A5 (en) * 1970-03-18 1971-12-17 Iampella Ab Oy Porous granule production and equipment
US4537647A (en) * 1982-10-06 1985-08-27 The Boeing Company Method for applying turbulators to wind tunnel models

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 6, Nr. 263 (M-181)[1141], 22. Dezember 1982; & JP-A-57 156 213 (FUKUBI KAGAKU KOGYO K.K.) 27-09-1982 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993000215A1 (fr) * 1991-06-21 1993-01-07 The Procter & Gamble Company Procede serigraphique destine a fabriquer un systeme d'attache mecanique rattachable et systeme d'attache ainsi fabrique
TR28751A (tr) * 1991-06-21 1997-02-28 Procter & Gamble Yeniden tutturulabilen mekanik bir tutturma sisteminin imalati icin elek baskisi yöntemi ve bundan üretilen bir tutturma sistemi.
KR100240360B1 (ko) * 1991-06-21 2000-01-15 데이비드 엠 모이어 재고착 가능한 기계적 패스너를 제조하기 위한 스크린 프린팅 방법 및 그에 의해 제조된 패스너
DE4300484C1 (de) * 1993-01-11 1994-01-05 Silit Werke Druckbehälter
NL1019690C2 (nl) * 2002-01-03 2003-07-04 Huibert Konings Vergruizer voor harde cryogene deeltjes.
US8071864B2 (en) 2009-04-15 2011-12-06 Monsanto Technology Llc Plants and seeds of corn variety CV897903
US8362332B2 (en) 2009-04-15 2013-01-29 Monsanto Technology Llc Plants and seeds of corn variety CV165560
US9883718B2 (en) 2012-06-26 2018-02-06 3M Innovative Properties Company Method for manufacturing fasteners and precursor webs, a fastener and a precursor web
CN109094880A (zh) * 2018-09-20 2018-12-28 安徽冠华农牧有限公司 一种肥料制粒打包装置
CN109094880B (zh) * 2018-09-20 2023-12-12 安徽冠华农牧有限公司 一种肥料制粒打包装置

Also Published As

Publication number Publication date
DE3808295A1 (de) 1989-09-21
DE58901791D1 (de) 1992-08-13
EP0333031B1 (fr) 1992-07-08

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